Artificial-stone machine.



' No. 878,417. PATENTED FEB. 4, 1908.

- T. A. MQMURTRIE.

ARTIFICIAL STONE MACHINE.

APPLICATION FILED APR. 8.1907.

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T. A. MOMURTRIE.

ARTIFICIAL STONE MA CHINE.

APPLICATION FILED APR. 8.1907.

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PATENTED FEB. 4, 1908.

'T. A. MOMURTRIE. ARTIFICIAL STONE MACHINE.

APPLICATION FILED APR.1907.

3 SHEETSSHEBT 3.

m m M THE NORRIS PETERS 60., WASHINGTON n. c.

UNITED STATES PATENT OFFICE.

THOMAS A. MoMURTRIE, OF LOS ANGELES, CALIFORNIA, ASSIGNOR, BY MESNEASSIGNMENTS, TO KIlVIMERLE CONCRETE MACHINERY COMPANY, OF LOS ANGELES,CALIFORNIA, A COR- PORATION OF CALIFORNIA.

ARTIFICIAL-STONELMACHINE Specification of Letters Patent.

Patented Feb. 4, 1908.

To all whom it may concern:

Be it known that I, THOMAS A. MoMUR- TRIE, a citizen of the UnitedStates, residing .at Los Angeles, in the county of Los Angeles and Stateof California, have invented a new and useful Artificial Stone Machine,of Which the following is a specification.

This invention relates to machines for forming artificial stone, and theobjects of the invention are to improve certain details of theconstruction of such machines as will hereinafter be pointed out.

Referring to the drawings :Figure 1 is a side elevation of the machinearranged for producing one form of stone, the dotted lines illustratingthe position of parts of the machine when opened to permit of removal ofthe stone, this machine being termed the side face machine. Fig. 2 is aplan view of the machine as shown in Fig. 1. Fig. 3 is a side view ofthe machine arranged for producing another form of stone, being what isshown in Fig. 3.

termed the face down machine. Fig. 4 is an end elevation of the facedown machine Fig. 5 is a side elevation of the face down machine shownin Fig. 3 with the machine closed for the removal of the cores. Fig. 6is a detail view in plan of the improved adjustable stripper plate. Fig.7 is a cross section on line x a: Fig. 6. Fig.8 is a view similar to Fig6 showing the stripper plate adjusted for another size of stone. Fig. 9is a detail view showing various sizes of spacing plates employed insecuring the various adjustments of the stripper plate. Fig. 10 is aperspective View of a corner post.

It should be understood that in the (llEH ings and description of thismachine, the machine is shown and spoken of in one instance as the sideface machine and in the other instance as the face down machine, and forthe sake of clearness these two forms of themachine are treated asdistinct from each other, although the machine as a whole is capable ofbeing converted from the face down form to the side face form, and viceversa. That is to say, one form is not what is usually termed amodification of another preferred form, but both forms are preferredforms, and the machine is adjusted into either form according to thestone which is to be produced.

The side face machine shown in Figs. 1 and 2 is employed for producing astone faced on two sides, or on all four sides if required. Thestationary base frame of the machine comprises a pair of horizontal bars1 having down-turned legs 2 at each end thereof, each pair of legs beingunited by cross rods 3. Each horizontal bar 1 is offset at 4 as shown inFig. 2. A pair of bolts 5 form pivots for the entire superstructurewhich is the main part of the machine, this superstructure being adaptedto swing bodily on the pivots 5, or to be opened with pivots 5 asfulcra, as will be seen.

The superstructure comprises two sections a and I), each section beingL-shaped in side View. The section a comprises a pair of L-shaped bars 6each composed of arms 7 and 8, the arm 7 being pivoted to its pivot 5 onthe horizontal bar 1 and the arm 8 being formed with a handle 9. Eacharm 7 and 8 is provided with a series of bolt holes 10 through whichbolts 10 pass for securing to either arm 7 or 8 a clamping plate 11. Thesection I) comprises a pair of L-shaped bars, each bar having an arm 12and an arm 13. The L-shaped bars. of section b are united by rods 13Each arm 12 is provided with a slotted extension 12 and a bolt 12 passesthrough the slotted extension 12 into the respective arms 7 of thesection a. Secured to one set of legs 2 is an offset lug 12, beingsecured to the lug by means of a bolt 12 and capable of verticaladjustment, the lugs 12 afl'ording seats for the arms 12. Each arm 13 isalso provided with bolt holes 10 permitting the attachment of a set ofclamping plates 11 to the arm 13. In the side face machine theseclamping plates 11 are attached to the arms 7 of the section a and tothe arms 13 of the section b.

Clamped between the respective clamping plates 11 and the respectiveadjacent arms are four pairs of supporting bars 1 1, each supporting bar14 having a slotted foot 15. Fastened' by bolts 16 to the slotted feet15 of the supporting bars 1 1 of the section a is a corner post 17 towhich is fastened a face plate 18 by means of bolts 18, while fastenedby similar bolts 16 to the supporting bars 14 of the section b is acorner post 17 to which is fastened a face plate 18 by means of bolts18. Each face plate is provided with a smooth face if the stone is tohave a smooth face, or with a roughened molded face if the stone is tohave a face to imitate a rough stone.

vided with correspondingly shaped molds or matriXes for producing suchornamentation on the face of the artificial stone.

The two sections a and b are locked together as shown in Fig. 1 by meansof a pair of earns 19, each cam being a double cam fastened by a bolt 20to its associated arm 8 and having a convex face 21 and a circularinclined cam face 22 formed as a flange on the cam. Each arm 13 isnotched as shown in Fig. 1 providing a shoulder 23 and a hearing face24. Fastened to each arm 13 is an offset lug 25 having a slotted foot 26through which a bolt 27 passes, adjustably securing the lug to the arm13 and the lugs 25 are adapted to receive the respective arms 8 of thesection a.

Resting upon the arms 12 is a board 28 which supports the material beingmolded and by means of which the artificial stone is removed from themachine after the stone has been formed. Gates or end face plates 29 arearranged at each end of the face plates 18 and rest upon the board 28.These gates 29 are supported in position by adjustable lugs 30 which areattached to the corner posts 17. The gates 29 may be arranged at pointsintermediate the length of the face plates 18 when stones of shorterlength are being formed, as is well known in the art. The gates 29 whenarranged. at the ends of the face plates, as shown in Fig. 2, are forthe production of a long stone the full length. of the face plates 18.

Preparatory to molding the stone, the machine is arranged as shown inFig. 1, the two sections a, and 5 locked together, the arms 9 being heldsecurely in their seats in the lugs 25 by means of the cam faces 22which bear against the shoulders 23 of the arms 13. The convex cam faces21 are forced against the bearing faces 24 of the arms 13 and force thearms 13 inward, thus drawing the two face plates 18 tightly against theend gates 29. This double action of the cams is accomplishedsimultaneously when the cams are swung around tight.

In forming the stone the machine is arranged as shown in Figs. 1 and 2and the material is tamped on top' of board 28 be-- If ornamental facesare to be formed on the stone, the face plates 18 will be prothe pivots5, and acting in the slotted eX- tensions 12 push forward the arms 12,the latter sliding in the lugs 12 and carrying the arms 13 and attachedface plates 18 into the hind the end gates 29, thus allowing the endgates 29 to be withdrawn from the ends of the stone. The board 28 uponwhich the stone rests is then removed from the machine and another boardinserted and the machine restored to its position as shown in Fig. 1ready for the molding of another stone.

When the stone is to be formed hollow, a stripper plate is employed inthe machine, through which stripper plate the cores are removed. Figs.3, 4 and 5 show the machine adjusted for producing such stone andequipped with the stripper plate and appurtenances for supporting thestripper plate. Figs. 6 to 9 show details of the improved form ofstripper plate. 3

Heretofore in machines of this character it has been necessary toprovide with this machine a number of stripper plates of various widths,lengths and openings, and it is one of the main objects of my inventionto eliminate the necessity of a number of stripper plates and to providea single stripper plate which is capable of being adjusted for each sizeof stone and core. The stripper plate comprises a pair of plates 50,each plate having a series of holes 51, and secured to the plates 50 arecross plates 52, each plate having slotted'lugs 53, bolts 54 passingthrough the lugs 53 into certain of the holes 51 according to thespacing desired between the plates 52. Each plate 52, as shown in Fig.7,lies flush with the plates 50, the lugs 53 of the plates 52 being offsetto permit of this. With each stripper plate are provided a set of plates52 raduated in widths and lengths as indicated in Fig. 9, by means ofwhich the space between the two plates 50 may be of the desired width,whilethe regulation of the spaces between plates 52 is secured by theseries of holes 51.

. The lower plate 50 of the stripper plate is attached by bolts 55 tolugs 56, the latter being pivoted at 57 to slotted lugs 58 which aresecured by bolts 59 to the arms 8. The stripper plate is held up inposition by a pair of cams 60, each cam being pivoted at 61 to a slottedarm62 which is clamped by a bolt 63 to the arm 8. In this face downmachine the face plate 18 is below the stone, the board 28 being at onesideand the stripper plate at the other side. If the lower face of thestone is to be formed at an angle to the side faces of the stone, thesupporting bars 14 are shifted by loosening the bolts 10 to incline thecorner posts 17 and face plate 18. If the bottom face of the stone is tobe at right, angles to the side faces of the stone, then the face late18 will be adjusted by means of the e amping plate 11 accordingly, asshown in Fig. 3.

In forming the stone the machine is arranged as shown in Fig. 3 and anamount of material is tamped into the bottom between the board 28 andstripper plate and on top of the face plate 18, the material beingintroduced to about the level of the spaces through the stripper plate.The cores 64 are slipped through the spaces in the stripper plate andthe rest of the material is tamped around the cores. After the stone hasbeen molded, the superstructure as a whole is swung on the pivots 5 intothe position shown in Fig. 5 with the arms 12 resting in lugs 12. Thisbrings the stripper plate on top and permits the core blocks to bewithdrawn vertically from the stone. After the core blocks have beenwithdrawn, the cams 60 are swung away from the stripper plate and thelatter is swung back on its pivots 57, then the cams 19 are relaxed, andby grasping the handles 9 the section a is swung back in the mannersimilar to that shown in Fig. 1, the section I) also sliding to the leftand carrying the board 28 and stone with it. The board 28 and stone arethen removed from the machine and the machine then restored to originalposition shown in Fig. 3.

What I claim is 1. In an artificial stone machine, a base frame, asuperstructure pivoted thereto, the superstructure comprising twosections, clamping plates carried by the respective sections, supportingbars adjustably held in position on the respective sections by saidclamping plates, and face plates connected with and supported by thesupporting bars.

2. In an artificial stone machine, a base frame, a superstructurecomprising two sections, each section formed of a pair of L- shapedbars, the bars of one section being pivoted to the base frame, the barsof the other section having slotted ends, and studs on said pivoted barsengaging in the slotted ends of the other bars for sliding one sectionalong the base frame when the pivoted bars are unlocked and swung ontheir pivots.

3. In an artificial stone machine, a base frame, a superstructuremounted thereon comprising two sections articulated together, one ofsaid sections being pivoted to the base frame, locking cams on thepivoted section, each locking cam having a convex cam face and aninclined cam face, the other section having notches, each notchaffording a shoulder, and a bearing face adapted to coact with therespective cam faces on the associated cam.

4. In an artificial stone machine, a base frame, a superstructurecomprising two sections, each section formed of a pair of L- shapedarms, the arms of one section being pivoted to the base frame, the armsof the other section having slotted ends engaging studs on the pivotedarms, and adjustable off-set lugs on the base frame for supporting thearms which have the slotted ends.

5. In an artificial stone machine, a base frame, a superstructurecomprising two sections, each section formed of a pair of L- shapedarms, the arms of one section being pivoted to the base frame, the armsof the other section having slotted ends engaging studs on the pivotedarms, adjustable offset lugs on the base frame for supporting the armswhich have the slotted ends, and offset lugs attached to the verticalarms of a section and adapted to receive and support the arms of thepivoted section, and locking cams carried by the pivoted section forforcing the arms into said latter lugs.

6. In an artificial stone machine, a base frame, a superstructuremounted thereon comprising two sections one of which is pivoted to thebase frame, the other being articulated to the pivoted section,adjustable arms secured to the pivoted section, lugs pivoted to saidarms, and a stripper plate adjustably secured to said lugs.

7. In an artificial stone machine, a stripper plate comprising a pair ofseparate parallel plates both in the same plane, and interchangeablespacer plates of various lengths with means for detachably securing themto the parallel plates in the same plane therewith to connect andadjustably support said parallel plates whereby the space between themmay be varied.

8. In an artificial stone machine, a flat rectangular stripper platecomprising side strips and cross strips and means for adjust- THOMAS A.MeMUR-TRIE.

In presence of GEORGE T. IIACKLEY, FRANK L. A. GRAHAM.

